This is the latest official released operation systems by Oberheim for DMX. This operation system update/upgrade requires two eprom chips.

After purchase, please state your desired Set depending on your current DMX revision.

Check installed software version:

Press [3], [5] and [7] simultaneously.

Info about latest OS revisions:

·         2.21 – Latest OS for the [Basic units].

·         3.20 – Latest OS for units with [Memory expansion installed].

·         4.01 – Latest units with [Factory midi].

Features/improvements for 4.01:

N/A